Also discussed here: Carnegie Mellon Researchers Urge Regulators To Rethink Strategies for Controlling Soot Emissions (Carnegie Mellon News, Mar 1, 2007)
And here: The Missing Source of Secondary Organic Aerosols (SOAs) (Science Quick Picks, Mar. 7, 2007)
Key Quotes:
“What we actually observe in the atmosphere is a factor of 3 – 100 times more than the SOA traditional models predict,”
“new chemical processes that occur after soot and gaseous pollutants are emitted from cars and trucks, changing the chemical and physical properties of the soot particles and creating new particulate matter.”
" this chemical processing leads to more particulate matter in the air, meaning that regulators are likely underestimating how sources such as cars and trucks contribute to pollution,"
"A second important finding is that the properties of this new particulate matter are different than we previously thought and potentially more toxic”
"We're seeing that urban pollution doesn't stay contained in the cities, but impacts rural and other downwind areas, creating even more complicated issues for regulators,"
"For the longest time, particulate matter has been the least understood component of the climate system.”
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- "Cutting soot emissions best hope for saving Arctic ice" and related posts (taragana.com)
- Reducing Soot Might Be Shortcut to Reverse Climate Change, New Study Says (popsci.com)
- Is aerosol bad for humans? (greenanswers.com)
- Study Finds Controlling Soot May Be Fastest Method to Reduce Arctic Ice Loss and Global Warming; Second-Leading Cause of Global Warming After CO2 (greencarcongress.com)
- California ARB and NOAA Collaborating in $20M Research on Interaction of Air Pollution and Climate Change; One Atmosphere Approach (greencarcongress.com)
- Aggressive action to reduce soot emissions needed to meet climate change goals (scienceblog.com)
- Atmospheric scientists start monthlong air sampling campaign (eurekalert.org)
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